diff --git a/README.md b/README.md
index 77fbcec..5b70df8 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,8 @@
 class Cat {
   String sound() => "Meow";
   bool eatFood(String food, {bool hungry}) => true;
-  int walk(List<String> places);
+  Future<void> chew() async => print("Chewing...");
+  int walk(List<String> places) => 7;
   void sleep() {}
   void hunt(String place, String prey) {}
   int lives = 9;
@@ -287,7 +288,7 @@
 
 void main() {
   // Create a new fake Cat at runtime.
-  var cat = new FakeCat();
+  var cat = FakeCat();
 
   cat.eatFood("Milk"); // Prints 'Fake eat Milk'.
   cat.sleep(); // Throws.
diff --git a/analysis_options.yaml b/analysis_options.yaml
index bbe63be..969b271 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml
@@ -5,6 +5,7 @@
     implicit-dynamic: false
   errors:
     # These are for 2.5.0-dev.2.0 and after
+    implicit_dynamic_function: ignore
     implicit_dynamic_list_literal: ignore
     implicit_dynamic_map_literal: ignore
     implicit_dynamic_parameter: ignore
diff --git a/example/example.dart b/example/example.dart
index b4439fb..9742c3a 100644
--- a/example/example.dart
+++ b/example/example.dart
@@ -1,3 +1,5 @@
+// ignore_for_file: sdk_version_async_exported_from_core
+// ignore_for_file: unawaited_futures
 import 'package:mockito/mockito.dart';
 import 'package:test/test.dart';
 
@@ -5,8 +7,8 @@
 class Cat {
   String sound() => "Meow";
   bool eatFood(String food, {bool hungry}) => true;
-  Future<void> chew() {}
-  int walk(List<String> places) {}
+  Future<void> chew() async => print("Chewing...");
+  int walk(List<String> places) => 7;
   void sleep() {}
   void hunt(String place, String prey) {}
   int lives = 9;
@@ -181,7 +183,7 @@
 
   test("Fake class", () {
     // Create a new fake Cat at runtime.
-    var cat = new FakeCat();
+    var cat = FakeCat();
 
     cat.eatFood("Milk"); // Prints 'Fake eat Milk'.
     expect(() => cat.sleep(), throwsUnimplementedError);